here's a nice Constantine as FIL AVG, son of Augustus, The second G in AVGG refers to Maximinus II, who was also given the title. Both Constantine and Maximinus II rejected the title.
Constantine I
A.D. 308
26mm 6.3gm
CONSTANTINVS•FIL•AVGG; laureate head right.
VIRTVTI EXERCITVS; Mars advancing r. in military dress, r. holding transverse spear, l. shield and trophy over shoulder; ✶in left field, Δ in right field.
In ex. •SM•TS•
RIC VI Thessalonica 39b
